Cambridge Primary Science 6, Activity book, Baxter F., 2014

Cambridge Primary Science 6, Activity book, Baxter F., 2014.
    
   The Cambridge Primary Science series has been developed to match the Cambridge International Examinations Primary Science curriculum framework. It is a fun, flexible and easy-to-use course that gives both learners and teachers the support they need. In keeping with the aims of the curriculum itself, it encourages learners to be actively engaged with the content, and develop enquiry skills as well as subject knowledge.




Changing the number of components.
In which circuit will the bulb or bulbs glow brightest?
A a circuit with one bulb and one cell
В a circuit with one bulb and two cells
C a circuit with two bulbs and one cell

Why is a bulb brighter when it is powered by two cells rather than one?
A because the flow of electricity in the circuit is less
В because the flow of electricity in the circuit is the same
C because the flaw of electricity in the circuit is greater.

Jamil has connected two bulbs and two cells in a circuit. How can he make the bulbs dimmer (but not switched off)?
A replace one of the cells with a section of wire
В replace one of the cells with a cork
C replace one of the bulbs with a section of wire.

Tracey makes a complete circuit with one bulb and three cells.

The bulb lights for an instant and then goes out. Why?
A not enough electricity flows around the circuit
В too much electricity flows through the bulb
C the cells are flat.

Contents.
Introduction.
Useful words.
1 Humans and animals.
1.1 Body organs.
1.2 The heart.
1.3 Heartbeat and pulse.
1.4 The lungs and breathing.
1.5 The digestive system.
1.6 What do the kidneys do?.
1.7 What does the brain do?.
Language review.
2 Living things in the environment.
2.1 Food chains in a local habitat.
2.2 Food chains begin with plants.
2.3 Predators and prey in the Namib Desert.
2.4 Food chains in the Namib Desert.
2.5 Deforestation.
2.6 Air pollution.
2.7 Acid rain.
2.8 Recycling.
2.9 Take care of your environment.
Language review.
3 Material changes.
3.1 Reversible and irreversible changes.
3.2 Mixing and separating solids.
3.3 Soluble and insoluble substances.
3.4 Separating insoluble substances.
3.5 Solutions.
3.6 How can we make solids dissolve faster?.
3.7 How does grain size affect dissolving?.
Language review.
4 Forces and motion.
4.1 Mass and weight.
4.2 How forces act.
4.3 Balanced and unbalanced forces.
4.4 The effects of forces.
4.5 Forces and energy.
4.6 Friction.
4.7 Investigating friction.
4.8 Air resistance and drag.
Language review.
5 Electrical conductors and insulators.
5.1 Which materials conduct electricity?.
5.2 Does water conduct electricity?.
5.3 Do different metals conduct electricity equally well?.
5.4 Choosing the right materials for electrical appliances.
5.5 Circuit symbols.
5.6 Changing the number of components.
5.7 Adding different components.
5.8 Length and thickness of wire in a circuit.
5.9 Improving Volta's battery.
Language review.



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Теги: рабочая тетрадь по английскому языку :: английский язык :: Baxter